QR Challenge: Halloween Puzzlers

Created using the ClassTools QR Treasure Hunt Generator

Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

• Download a QR reader (e.g. I-Nigma | NeoReader | Kaywa) onto their mobile devices
• Bring these devices into the lesson.

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

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B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

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C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

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Questions / Answers (teacher reference)

Question	Answer
1. Dylan's farm picked a total of 510 pumpkins. Dylan separated the pumpkins into small and large. He sold the small pumpkins for $3.00 each and the large pumpkins for $7.00 each. He sold all of the pumpkins for total sales of $2,490. How many small and large pumpkins did Dylan originally pick?	270 small pumpkins and 240 large pumpkins.
2. Jordan, Sarah, and Eric went trick-or-treating on Halloween. Altogether, they collected 47 pieces of candy. Sarah collected six more than two times the number of pieces of candy collected by Jordan. Eric collected seven less than the number of pieces of candy collected by Jordan. How much candy did Eric collect?	Jordan collected 12 pieces of candy, Sarah collected 30 pieces, and Eric collected 5 pieces of candy.
3. There are a total of eighteen ghosts, witches, and scarecrows at the haunted house. The number of witches is four less than the number of ghosts. The number of scarecrows is five more than the number of witches. How many ghosts and witches are at the haunted house?	There are 3 witches, 7 ghosts, and 8 scarecrows at the haunted house.
4. A bat was flying for seven hours at an average speed of 9 kilometers per hour. The bat flew at 4 kilometers per hour during the first two hours of flight. How fast did the bat fly the last 5 hours?	11 kilometers per hour.
5. Kaylee bought nine bags of candy at the store for a total price of $28.83. She bought some bags of candy that cost $3.09 each and the rest cost $3.26 each. How many bags of the $3.26 candy did Kaylee buy? How many bags of the $3.09 candy did she buy?	6 bags at $3.26 and 3 bags at $3.09
6. How many pounds of candy selling for $1.75 a pound should be added to three pounds of candy selling for $4.25 a pound to create a blend which will sell for $3.25 a pound?	2 bags at $1.75
7. Twenty-four children are planning to dress up for Halloween. 1/2 of the children are wearing zombie costumes. 1/8 of the students are dressing like vampires. 1/4 of the students are wearing ghost costumes and 1/8 are dressing like princesses. How many students are dressing up as ghosts or vampires?	9 students are dressing up as ghosts or vampires
8. A teacher made 14 cupcakes for a Halloween party. She did not have enough cupcakes to gives to each of her students. She decided to cut each cupcake into 2/3 pieces in order to have enough cupcake pieces to feed her entire class. How many students are in the teacher's class?	21 students

 

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